import java.util.concurrent.Callable;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.FutureTask;

public class Demo2 {
    public static void main(String[] args) throws InterruptedException, ExecutionException {
        Callable<Integer> callable = new Callable<Integer>() {
            @Override
            public Integer call() throws Exception {
                int result = 0;
                for (int i = 1; i < 1001; i++) {
                    result+=i;
                }
                return result;
            }
        };
        //创建线程,将Callable搭载到线程中
        FutureTask<Integer> futureTask = new FutureTask<>(callable);
        Thread t = new Thread(futureTask);
        t.start();
        t.join();

        System.out.println(futureTask.get());
    }
}
